Test Index

JAMB Geography 2017 Paper

Question : 17

Total: 50

It is noon in place X, what is the time in a place 45^oE

Solution:

Concept:

Time increases when moving eastward due to Earth’s rotation through

15^\circ

per hour.

Explanation:

Earth completes

360^\circ

24

hours, so

360^\circ \div 24 = 15^\circ

per hour.

A place at

45^\circ\text{E}

45^\circ

east of place X.

45^\circ \div 15^\circ = 3

hours of time difference.

Since it is east, time is ahead, so we add the difference.

Noon (

12:00

pm) plus

3

hours gives

3:00

pm.

Answer:

3 pm.

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